Pipe-coupling.



\ J. M. CAMERON.

PIPE GOUPLING.

' APPLIOATON I'ILBD JULY 15, 1908. 927,403. Patented July 6, 1909.

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Without requiring them to be bent. 20 and other advantageous ends I secureas JOHN M. CAMERON, 'OF CRANBERRY, NORTH CAROLINA..4

Specification o! Letters Patent.

Patented July 6, 1909.

Application led iliilyy 15; 1908. Serial No. 443,676. y

To all whom it may concern: l

Be it known that I, JOHN M. CAMERON, a citizen of the United States, residing in Cranberry, North Carolina, have invented certain Improvements in Pipe-Couplings, of which the following is/a specliication.

One object of my invention is 4to rovide a' coupling .or pipes, tubes, hose, an the like, which shall consist of but few parts and be of such a construction as will permit of said parts being quickly plut together or disconnected; it being 'furt er desired that the device shajl be of such a nature as to remain free from leaks regardless of Whether it is employed for liquids or gases under pressure.

., I also desire to provide a coupling which will ermit the ipes` to which itvis'connected to e extende at various angles to each other rlhese v hereinafter set forth, reference being had to.

the accompanying drawings, in which Figurel, is a vertical section illustrating my improved coupling; Fig. 2, is a vertical section illustrating a special form of the coupling particularly adapted for use when it is desired that the two lengths of pipe to be connected shall extend at an angle to each other; Fig. 3, is a vertical section, illustrating my improved coupling asadapted for use with a common formpf Vhose connection 4; Figs. 4 and 5, are respectively end elevations of the coupling shown in Fig. 3.

In Fig. 1, of the above drawings, A and B represent. respectively the two adjacent ends of len ths of ipe to be coupled, the first of these ein Y.t ireaded for the reception of a reducing bushing C. The second pipe section B has at or ad`acent to one end a ortion of reduced externa diameter and has" xed to The shoulders connecting the parts of different diameters, both of the pipe section B and of the sleeve D, are inclined or beveled at angles of about 45 as indicated at b and d, andthe end of said sleeve D adjacent to the *.50 reducing bushing C, is 'interiorlythreaded for the reception of the threaded portion of said bushing. It will be noted that the end' of the pipe section B extends immediately adj acentto the end of the section vA so that there is formed within the sleeve D, outside the pipe sections, an annular recess or chamriously act u on `the packing rings.

ber in which'are mounted two packing rings E and F anda spring G; the latter extending between one end of the ring E and the adjacent face of the reducing bushing C or pipe section A. The spring G surrounds the reduced end of the pipe section'B and continually-tends to Ipress the packin ring E into engagement with the Ibeveledvfshoulder t of said section, the end of said packing ring being formed on a bevel corresponding to that vof the shoulder. The packing ring F, which ts outside of the ring E within the recess, is beveled at both ends, and one of these` beveled portions cooperates with and engages the shoulder d of the sleeve D. -`Under conditions of use, fluid under 'prese sure from the pipe system enters the recess II formed by the sleeve D and the reducing bushing C and not only acts to force both packing rings E and F againstthe two shoulders b and d, but also, by pressing u on the free beveled end ofthe ring F forces t iis into intimate contact with the packing ring E. Moreover, the action of the spring G is such that the packing ring E is forced toward the shoulderb, and being free to slide thereon to a limited extent, is also forced against the inside surface of the packing ring F. There is thus formed a fluid tight joint between the two pipe sections, or rather between the pipe section B and the sleeve D since the threaded joints between thet reducing bushing (l and the ipe section A and the sleeve I) arc necessari y made fluid tight. Owing to the fact that the ends of the two ipe sections extend into close proximity with each other, there is little or no opportunity for sand or other foreign bodies getting into the Jchamber H so as to eut or inju- These latter are pre era-bly made of rubber or other resilient or soft material, and it is possible that in some instances soft metal or other equivalent material may be employed.

In the form of my invention illustrated in Fig. V2, I thread the end of the pipe section B employed for connecting sections of air hose, an

in this instance the sleeve D2 has threads upon its exterior for the reception of the i11-4 terior threads of a bushing C2. The coupling as a whole is so designed that its parts may be quickly connected or disconnected.

IVhile I preferably employ the spring G to lhold one of the packing rings to 1ts seat or shoulder when the device is not under ressure, it may in some instances vbe omitted without departing from the main features of my invention.

1. The combination of two pipe sections, of which one is provided with a beveled seat,

. a sleeveconnecting said pipe sections .and

also having a seat, a packing ring, having a beveled portion placed to coperate with said beveled seat ofthe pipe'section, anda second packing ring placed to coperate with the shoulder, with two packing rings, one inside of the other, res ectively engaging the beveled shoulders o the pipe section and of said sleeve. i

4. The combination in a pipe coupling of two pipe sections, of which one is provided with a beveled shoulder, a sleeve having a iluid tight connection with one of said sec'- tions and provided' with an interior beveled shoulder, two other, respectively engaging the beveled shoulders of the pipe section and said sleeve, and a s ring acting on said packing rings.

v5. T e combination of two pipe sections of which, one is provided with a reduced portion terminating in a beveled shoulder, a sleeve having iiuid tight connection with the other of.v the pipe sections and havin an interior beveled shoulder, with two pac ing rings, one inside of the'other and having beveled ends respectively engaging the shoulders ofthe pipe section and the sleeve.

6. .The combination of two pipe sections of which one is provided with a reduced portion'terminating in a beveled shoulder, a sleeve having fluid tight connection with the other of the pipe sections and provided with anl interior beveled shoulder, with two packe' ing rings having beveled ends respectively engagingthe shoulders of the pipe section and the sleeve, one of said packing rings having also a beveled end exposed,k to the action of fluid under pressure whereby it is forced into intimate engagement with the other packing ring.

i. 'In testimony whereof, I have signed my name to this speciiication, in the presence. of two subscrlbmg witnesses.

JOHN M. CAMERON.

Witnesses f packing rings, one inside the- 

